Won't start
 

I am working on my sons 94 Gt . It will not start and I have a trouble code number 543. It says Fuel pump circuit open; PCM TO MOTOR. I have no power to anything. Head light won't come on, starter won't turn, Battery is fully charged. Dome light and radio does work. I the PCM shot. :confused: Could anyone help me figure this out?

Re: Won't start
 

I'd start checking the major busses and fusible links. Usually a sure sign of the PCM being fried is that the fuel pump and fan will both run constantly when the key is in the ON position.